laboratory diagnostic - testing and comparison - biological samples and assessment reports - quality control - internal - reference strains - qualitative - Listeria monocytogenes, equivalent collections NCTC 11994, DSM® 15675, WDCM 00019, vial x10 discs, keep at freezer, C.F.U between 10^6-10^9, freeze-dried, water-soluble, used in solid or liquid media, code L37RS1035-10, todylaboratories®, expires 2025.09